Pivoted bender with adjustable stops



' Nov. 18', 1947. E. WALLACE 2,430,899

1 PIVOTED BENDER- WITH ADJUSTABLE STOPS Filed Aug. '2, 1945 INVENTOR.

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Patented Nov. 18, 1947 UNlTED STATES PATENT OFFICE PIVOTED BENDER WITHADJUSTABLE STOPS '1 Claim.

This invention relates to a bending machine.

An object of this invention is to provide a machine which will quicklyand easily bend wire, strip metal or other material of varying thicknesson different radii.

Further objects and advantages of this invention, as well as itsconstruction, arrangement and operation, will be apparent from thefollowing description and claims in connection with the accompanyingdrawings in which Figure 1 is an isometric view of the bending machine.

Figure 2 is a fragmentary view in vertical section on the line 22 ofFigure 1.

Figure 3 is a fragmentary view in vertical section of the bendingmachine, showing the handle stop, and taken along the line 3-3 of Fig.1.

Figure 4 is an isometric view of a modification of the bending element.

Fig. 5 is an isometric fragmentary view showing the guide plate andassociated parts.

Referring to the drawings in detail, Figure 1 shows a preferredembodiment of the invention wherein a rectangular base is indicated bythe reference numeral ID. Recess H is provided at the top of base iiiand receives a circular disc I2 which has sockets I3 in the facethereof. The sockets i3 are located one on the axis of disc l2 andothers at varying radii from the axis. Sockets i3 receive cylindricalforming elements l4 which serve a purpose to be later described.

Integral with the bottom of disc I2 is a spindle i5 which passes throughthe bore l6 leading from the recess H to the bottom of base It. Spindlei5 has a square portion 23 which receives the square hole ll of arm IS,the arm l8 being held on the spindle i5 by means of a washer l9 and anut 253 which is received on the threaded portion 2i. The free end ofarm l8 threadedly receives a handle 22. A bore 24 is provided in thedisc i2 and spindle i5 to allow the insertion of a tool for tapping outthe axially located forming element I4.

Extending across the base I8 is a slot 3| of inverted T-shape in crosssection. The T-bolt :32 is slidably received by the slot 3| and passesthrough a slot 33 in a horizontal plate 34, the horizontal plate 3dbeing integral with a vertical guide plate 35. A washer and nut 31 arereceived by the T-bolt 32 to hold the guide plate 35 in fixed position.

Mounted on the rear edge 30 of base ID as by a drive fit, are twocylindrical supports 40 which also pass through bores 4| of cylindricalguide bar 12, the cylindrical guide bar 42 being positioned amendedApril 30, 1928; 370 0. G. 75 7) on cylindrical supports 40 by means ofset screws 43. Slidably mounted on guide bar 42 is a rectangular slide44, of sufficient width to contact and slide along the rear edge 3|] ofbase Ill, 2. collar 45 integral with the slide 44 and mounted on a guidebar 42 being utilized to achieve the sliding relationship and a setscrew 48 being used to fix the position of slide 44. Mounted on theslide 44 as by a screw 46 is a rectangular stop plate 41 so positionedas to contact the top of base I0.

Limitation of the swing of arm i8 is achieved by means of angle member50 positioned below the base I!) by means of bolt 5|, washers 52 and nut53, the bolt 5| being received in a slot 54 of the angle member 55. Thebolt 5| may be received by any of the bores 55 to increase the range ofpositions for the angle member 50.

In the operation of the device, wire or strip metal is inserted betweenthe cylindrical forming elements I4 and moved up to the stop plate 41.The guide plate 35 is then positioned to contact the wire or strip metaland fastened in place by means of nut 31. Handle 22 is then used torotate the disc I2 and forming elements l4 thereon to achieve thedesired bending in the material. It is to be understood that stop platei! is adjustable as desired along guide bar 42 to locate the bend in thematerial and that the adjustable positioning of angle member 5!! bymeans of slot 54 or utilization of any of the bores 55 will determinethe linear extent of the bend.

A modification of the bending element is illustrated in Figure 4 andcomprises a disc having a slot GI and a spindle 62 for insertion in theaxial socket I3, a screw 63 for reception by tapped hole 64 in disc l2being utilized to hold it in fixed position. This forming element isused in the manufacture of lock rings. In use, wire is inserted into theslot GI and the disc l2 and forming element 60 rotated until nearly acomplete circle is made. In this operation, the guide plate 35 ispositioned as necessary.

It is to be understood that various modifications and changes may bemade in this invention without departing from the spirit and scopethereof as set forth in the claim.

The invention described herein may be manufactured and used by or forthe Government of the United States of America for governmental purposeswithout the payment of any royalties thereon or therefor.

What is claimed is:

A bending machine comprising a flat rectangular base, a circular recessin the top of said 3 base, a circular disc in said recess, a socket insaid disc at its center, other sockets in said disc at varying distancesfrom said center, a cylindrical bending element in said central socket,a cylindrical bending element in another of said sockets, a bore in saidbase from the bottom of said base to said recess, a spindle integralwith said disc and extending through said bore, a portion of saidspindle below said base being square, an arm having a square hole, saidarm being mounted on the square portion of said spindle, means to fixsaid arm on said square portion, a handle on the free end of said arm, acylindrical bar mounted parallel to the rear edge of said base, a memberslidably mounted on said bar, means to adjustably position said memberalong said bar,- said member being of sufiicient width to contact therear edge of said base, a stop plate mounted on said member and incontact with the top of said base, an inverted T-slot extending acrosssaid base, a vertical guide plate parallel to the long edges of saidbase, a flat plate extending from the rear of said guide plate, saidflat plate having a slot parallel to the rear edge of said base, aT-bolt in said T-slot extending through said slot, a nut on said T-bolt,a series of bores in said base, an L-shaped member below said base, andmeans to bolt the long leg of said L-shaped member in one of the boresof said series.

EVERETT WALLACE.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 1,020,582 Straus, Jr Mar. 19,1912 1,206,114 Jameton Nov. 28. 1916

